/Engine/Plugins/Runtime/GeometryProcessing/Source/DynamicMesh/Public/MeshSimplification.h
Figure out if we can collapse edge eid=[a,b] under current constraint set This depends on the base class functionFMeshRefinerBase::CanCollapseEdge, but includes additional restrictions specified by the CollapseMode of this simplifier. See the base class for description of parameters.
bool CanCollapseEdge ( int edgeID, int a, int b, int c, int d, int t0, int t1, int & collapse_to ) const